Thread Repair Holley Fuel Bowl

[Timothy B.]

Re: Thread Repair Holley Fuel Bowl

Thanks Dick and Clem,

As soon as the camera batteries charge I will post a picture showing the condition of the threads.

There is approx 1/4" of good thread inside that's perfect but I don't think there is a longer fitting that will work with this bowl..

[Clem Z.]

Re: Thread Repair Holley Fuel Bowl

Thanks Dick and Clem,

As soon as the camera batteries charge I will post a picture showing the condition of the threads.

There is approx 1/4" of good thread inside that's perfect but I don't think there is a longer fitting that will work with this bowl..

did you check with any of the carb rebuilder to see if they have the the special helicoil ??

[Timothy B.]

Re: Thread Repair Holley Fuel Bowl

Here are some pics of the bowl showing the bad threads. I am concerned about the indent in the bowl that may cause the drill bit to go through the side,(last pic).

It's a shame I can't find a longer attachment screw because the threads below are pristine as is the rest of the bowl. This bowl has the little roof and eye features found only on the early 2818 bowl.

[Gary B.]

Re: Thread Repair Holley Fuel Bowl

After looking at your photos I like Dick's idea.

If there are a few threads still left, I have used Loctite Form-A-Thread to repair carb inlet fittings. I know, the last time I posted this I got shot down in flames, but it does work with no leaks. I know of one repair on a daily driver that was done over 10 years ago and still does not leak. We used it to salvage several valuable carburetor bodies and fuel bowls. It is a high strength epoxy with a release agent that you apply to the threads. Once the epoxy sets up, you can remove and replace the fitting

If you use it, follow the instructions to the letter for good results.

[Dick W.]

Re: Thread Repair Holley Fuel Bowl

Here are some pics of the bowl showing the bad threads. I am concerned about the indent in the bowl that may cause the drill bit to go through the side,(last pic).

It's a shame I can't find a longer attachment screw because the threads below are pristine as is the rest of the bowl. This bowl has the little roof and eye features found only on the early 2818 bowl.

From the picture, I believe the Loctite Thread Repair would work

[Clem Z.]

Re: Thread Repair Holley Fuel Bowl

Here are some pics of the bowl showing the bad threads. I am concerned about the indent in the bowl that may cause the drill bit to go through the side,(last pic).

It's a shame I can't find a longer attachment screw because the threads below are pristine as is the rest of the bowl. This bowl has the little roof and eye features found only on the early 2818 bowl.

any good machine shop can make a new longer threaded brass part if the cost is not a problem.

[Dick W.]

Re: Thread Repair Holley Fuel Bowl

any good machine shop can make a new longer threaded brass part if the cost is not a problem.

If you use a longer threaded part, you stand the chance of restricting fuel flow.

[Clem Z.]

Re: Thread Repair Holley Fuel Bowl

If you use a longer threaded part, you stand the chance of restricting fuel flow.

once the brass piece was installed and tightened in the bowl with the fittting you could mark the location remove the brass piece and drill a hole thru the threaded part to line up the the passage to the secondary bowl for fuel flow. if he uses your idea he should check to make sure the epoxy is ethanol proof.

[Dick W.]

Re: Thread Repair Holley Fuel Bowl

once the brass piece was installed and tightened in the bowl with the fittting you could mark the location remove the brass piece and drill a hole thru the threaded part to line up the the passage to the secondary bowl for fuel flow. if he uses your idea he should check to make sure the epoxy is ethanol proof.

Apparently it is as there are several drivers around here that have had the epoxy fix. It is a lot easier to fix a quadrajunk with epoxy than it is to install one of the repair kits. And besides, it looks a whole lot better

[Timothy B.]

Re: Thread Repair Holley Fuel Bowl

Dick,

Is this Locktite product available in auto parts stores or home depot?

It's probably the best approach and if I am not happy I can persue the helicoil idea. I am going to the machine shop just to see if they have a helicoil.

After I finish I will post some pics for everyone.

[Clem Z.]

Re: Thread Repair Holley Fuel Bowl

Dick,

Is this Locktite product available in auto parts stores or home depot?

It's probably the best approach and if I am not happy I can persue the helicoil idea. I am going to the machine shop just to see if they have a helicoil.

After I finish I will post some pics for everyone.

i looked thru the whole helicoil catalog and they list no 9/16-24 insert

[Clem Z.]

Re: Thread Repair Holley Fuel Bowl

Dick,

Is this Locktite product available in auto parts stores or home depot?

It's probably the best approach and if I am not happy I can persue the helicoil idea. I am going to the machine shop just to see if they have a helicoil.

After I finish I will post some pics for everyone.

the loctite product is part # 37390

[Michael H.]

Re: Thread Repair Holley Fuel Bowl

Dick,

Is this Locktite product available in auto parts stores or home depot?

It's probably the best approach and if I am not happy I can persue the helicoil idea. I am going to the machine shop just to see if they have a helicoil.

After I finish I will post some pics for everyone.

Timothy,

Wouldn't it be a lot easier and a LOT safer to just find a new or good used bowl? These things can't be hard to find and you would never feel comfortible driving around knowing a gob of Locktite is all that's between you and a dandy blaze if the fitting pops out while driving.

[Jack H.]

Re: Thread Repair Holley Fuel Bowl

any good machine shop can make a new longer threaded brass part if the cost is not a problem.

Assuming procuring another bowl is a problem...and looking at the pics and how nice the threads are just a bit deeper...I really like this idea. If you have a vocational high school or college close that has machine shop equipment/classes, you could probably even get one made cheap as a special project. As Dick/Clem point out, you may need to drill a hole to ensure adequate flow.

[Dick W.]

Re: Thread Repair Holley Fuel Bowl

Tim, my local Fastenal had it in stock.